using System;
using System.Collections.Generic;
using System.Text;
using System.IO.Ports;
using System.Threading;
namespace Hello_CS_World
{
    class Program
    {
        static void Main(string[] args)
        {
         bool _continue = true ;
         string message;
         StringComparer stringComparer = StringComparer.OrdinalIgnoreCase;
        // Display title and prompt line on console
         Console.WriteLine("Hello C# World");
         Console.WriteLine ("Type QUIT to Exit");
        // Loop reading in lines from keyboard until user types "quit"
         while (_continue)
         {
            message = Console.ReadLine();
             if (stringComparer.Equals("quit", message))
             {
             _continue = false;
             }
         }
        }
    }
}